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X-OriginatorOrg: freescale.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 Feb 2015 15:51:20.5862 (UTC) X-MS-Exchange-CrossTenant-Id: 710a03f5-10f6-4d38-9ff4-a80b81da590d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=710a03f5-10f6-4d38-9ff4-a80b81da590d; Ip=[192.88.168.50] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BY2PR03MB459 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" From: Hai-Ying Wang Change-Id: Ica4d1b2b0fd3c3ae5e043663febd9f4cb7c762cf Signed-off-by: Hai-Ying Wang --- drivers/soc/freescale/qman_portal.c | 45 +++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) diff --git a/drivers/soc/freescale/qman_portal.c b/drivers/soc/freescale/qman_portal.c index 7216de1..b008b41 100644 --- a/drivers/soc/freescale/qman_portal.c +++ b/drivers/soc/freescale/qman_portal.c @@ -30,6 +30,9 @@ */ #include "qman_priv.h" +#ifdef CONFIG_HOTPLUG_CPU +#include +#endif /* Global variable containing revision id (even on non-control plane systems * where CCSR isn't available) */ @@ -381,6 +384,45 @@ static void qman_offline_cpu(unsigned int cpu) } } +#ifdef CONFIG_HOTPLUG_CPU +static void qman_online_cpu(unsigned int cpu) +{ + struct qman_portal *p; + const struct qm_portal_config *pcfg; + p = (struct qman_portal *)affine_portals[cpu]; + if (p) { + pcfg = qman_get_qm_portal_config(p); + if (pcfg) { + irq_set_affinity(pcfg->public_cfg.irq, cpumask_of(cpu)); + qman_portal_update_sdest(pcfg, cpu); + } + } +} + +static int __cpuinit qman_hotplug_cpu_callback(struct notifier_block *nfb, + unsigned long action, void *hcpu) +{ + unsigned int cpu = (unsigned long)hcpu; + + switch (action) { + case CPU_ONLINE: + case CPU_ONLINE_FROZEN: + qman_online_cpu(cpu); + break; + case CPU_DOWN_PREPARE: + case CPU_DOWN_PREPARE_FROZEN: + qman_offline_cpu(cpu); + default: + break; + } + return NOTIFY_OK; +} + +static struct notifier_block qman_hotplug_cpu_notifier = { + .notifier_call = qman_hotplug_cpu_callback, +}; +#endif /* CONFIG_HOTPLUG_CPU */ + __init int qman_init(void) { struct cpumask slave_cpus; @@ -499,5 +541,8 @@ __init int qman_init(void) cpumask_andnot(&offline_cpus, cpu_possible_mask, cpu_online_mask); for_each_cpu(cpu, &offline_cpus) qman_offline_cpu(cpu); +#ifdef CONFIG_HOTPLUG_CPU + register_hotcpu_notifier(&qman_hotplug_cpu_notifier); +#endif return 0; }